The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 1991
Filed:
Feb. 14, 1990
Applicant:
Inventor:
Tomio Ueda, Sendai, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330277 ; 330290 ; 330296 ;
Abstract
Disclosed is an amplifying circuit comprising an amplifying transistor for amplifying an input signal, and a bias circuit for determining a current passing through the amplifying transistor and for determining an output voltage at the output of the amplifying transistor. The bias circuit comprising a current determining transistor for determining a current conducting through the amplifying transistor and a voltage determining transistor for determining an output voltage at the output of the amplifying transistor. The output voltage is determined independently from the determination of the current.